Stepan Salenikovich authored Apr 13, 2015 and Eloi Bail committed Apr 17, 2015

Load 300 contacts at a time into LRC every 10ms
to reduce potential load if there are a lot of contacts.
These numbers where chosen to load 1M contacts in about 30s
but are otherwise arbitrary.

Also fixes small mem leak.

Refs #69856

Change-Id: Ia4341b3b80581e95858e1f46b2452219ad2e1e94